290992081 has 8 divisors (see below), whose sum is σ = 292922784. Its totient is φ = 289068000.

The previous prime is 290992033. The next prime is 290992103. The reversal of 290992081 is 180299092.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 290992081 - 2¹¹ = 290990033 is a prime.

It is a super-2 number, since 2×290992081² = 169352782409421122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (290993081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109885 + ... + 112501.

It is an arithmetic number, because the mean of its divisors is an integer number (36615348).

Almost surely, 2^290992081 is an apocalyptic number.

It is an amenable number.

290992081 is a deficient number, since it is larger than the sum of its proper divisors (1930703).

290992081 is a wasteful number, since it uses less digits than its factorization.

290992081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3311.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 290992081 is about 17058.4899976522. The cubic root of 290992081 is about 662.6645275958.

The spelling of 290992081 in words is "two hundred ninety million, nine hundred ninety-two thousand, eighty-one".